Home / 76,682.68-105,823.18-42,692.64

Finding the Fourth Proportional to 76,682.68, 105,823.18 and 42,692.64

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Solution

The fourth proportional to 76,682.68, 105,823.18 and 42,692.64 is: 58,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,682.68 : 105,823.18 = 42,692.64 : x
  2. Step 2: Convert to fraction form
    76,682.68/105,823.18 = 42,692.64/x
  3. Step 3: Cross multiply
    76,682.68x = 105,823.18 × 42,692.64
  4. Step 4: Simplify right side
    76,682.68x = 4,517,870,927.40
  5. Step 5: Solve for x
    x = 4,517,870,927.40/76,682.68
  6. Step 6: Final answer
    x = 58,916.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.